National Geographic: Guns, Germs and Steel [2 Discs]

"What caused some early civilizations to thrive and others to collapse? Which factors contribute positively to the survival of a people and what brings them to extinction? Author Jared Diamond examined this phenomenon in his best-selling book Guns, Germs, and Steel, and this documentary (produced for television by the National Geographic) brings his theories to the screen. The material on National Geographic: Guns, Germs, and Steel has been transferred to disc in the full-frame aspect ratio of 1.33:1, and the audio has been mastered in Dolby Digital Stereo. The narration is in English, with no multiple language options."